EP3322624A1 - Verfahren und vorrichtung zur steuerung einer geräuscharmen druckluftaufbereitung - Google Patents
Verfahren und vorrichtung zur steuerung einer geräuscharmen druckluftaufbereitungInfo
- Publication number
- EP3322624A1 EP3322624A1 EP16741285.7A EP16741285A EP3322624A1 EP 3322624 A1 EP3322624 A1 EP 3322624A1 EP 16741285 A EP16741285 A EP 16741285A EP 3322624 A1 EP3322624 A1 EP 3322624A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- venting
- air
- valve
- predetermined
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/048—Arrangements for compressed air preparation, e.g. comprising air driers, air condensers, filters, lubricators or pressure regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/008—Reduction of noise or vibration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/8616—Control during or prevention of abnormal conditions the abnormal condition being noise or vibration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/885—Control specific to the type of fluid, e.g. specific to magnetorheological fluid
- F15B2211/8855—Compressible fluids, e.g. specific to pneumatics
Definitions
- the present invention relates to an apparatus and a method for controlling a compressed air treatment for at least one compressed air device in a vehicle.
- the invention also relates to a computer program with code means for
- Code means of the computer program is stored.
- EAC electronic air treatment
- intelligent electronics For example, the functions of an air dryer, a pressure regulator and a four-circuit protection valve can be combined and integrated into one device.
- Such a compact system is easy to install, offers greater functionality and saves several hundred liters of fuel a year.
- an EAC system for example, with an electronic book
- Intelligence be designed for cleaning, drying and distribution of filtered compressed air in the braking system and for a continuous active, intelligent
- the EAC controls the filling process of the air tanks for the brake and the secondary consumers in one
- Air reservoir required for parking brake or trailer supply is its processor control
- Information from pressure sensors and from a CAN data bus of the vehicle can be used for the distribution of compressed air and optimal control of the braking system in
- a compressed air device for a vehicle with two circuits with different pressures and with at least one of the circuit with the higher pressure acted upon by at least one valve device compressed air consumer, wherein a vent port of the valve device and / or a vent port of the Compressed air consumer is connected to the circuit with lower pressure, which communicates with a limited by a movable element pressure chamber of a collecting container, and the pressure chamber is connected to a suction side of an air compressor whose pressure side directly or indirectly with a pressure connection of at least one valve device in
- the collecting container is designed such that its
- Pressure chamber in a pressurized state under one of the venting of the valve device and / or the at least one compressed air consumer
- Blocking pressure chamber of the collecting container when venting against the environment this venting pressure can be kept approximately constant in the circuit with the lower pressure.
- the present invention has for its object to reduce the noise associated with the venting of an electronic air conditioning system with alternative means without dual circuit system with air return. This object is solved by the features of the device and the method according to the independent claims.
- a control device for controlling the compressed air preparation can be implemented as software, hardware or a combination of software and hardware. It may have one or more interfaces to exchange appropriate data with other devices of the vehicle.
- the controller may be implemented as one or more modules and / or processes and / or objects and / or threads.
- a valve device for stepwise switching off a venting operation in response to reaching predetermined pressure values and for restarting the venting process after a predetermined period of time is controlled.
- the device is thus designed for multiple switching off and restarting the venting process when successive predetermined pressure values, preferably decreasing pressure values, of the venting pressure are reached until a predetermined lower pressure limit is reached.
- the data required to control the shutdown and reclosing operations may be preset or obtained from past or current measurement data.
- the valve device can be controlled by means of a time-modulated signal, whose on-time corresponds to the duty cycle of the valve device.
- the controller can thereby by means of suitable
- the device may comprise a timer for measuring a time corresponding to the pressure drop during the deaeration process, wherein the device is configured, the measured time period for
- the control can thus, starting from a simple time measurement with knowledge of
- the device can be a
- Temperature sensor for measuring a temperature corresponding to the pressure drop during the deaeration process, wherein the device is configured to use the measured temperature to determine a pressure drop during the deaeration process.
- the controller can thus start from a simple
- the device can be a
- Sound pressure sensor for measuring a sound pressure corresponding to the pressure drop during the deaeration process, wherein the device is configured, the measured sound pressure to determine a pressure drop during the deaeration process consulted.
- the control can thus be carried out starting from a direct sound pressure measurement during the deaeration process.
- the device can be a
- Pressure sensor for measuring an air pressure in the venting process, wherein the device is configured to use the measured air pressure to determine a pressure drop during the venting process.
- the control can thus be carried out starting from an air pressure measurement during the deaeration process.
- the device may be configured to permanently energize the valve device in response to reaching the lower pressure limit until substantially no overpressure is present.
- the invention relates to a computer-readable storage medium, on which a program code executable on a computer system is stored, which generates or implements the steps of the aforementioned method.
- the invention relates to a computer program with code means which, when executed on a computer system, the steps of the aforementioned
- FIG. 1 is a schematic block diagram of a compressed air treatment system according to an embodiment
- Fig. 2 two timing diagrams with pressure gradients, sound pressure gradients and
- Fig. 3 is a flowchart of a control method according to a second
- FIG. 1 shows a schematic block diagram of a compressed air treatment system according to a first embodiment of a commercial vehicle.
- the generated compressed air can be used for example for an electro-pneumatic braking device and / or an air suspension device.
- Reservoir air tanks (not shown) are connected via compressed air lines with the
- Compressed air treatment system in connection, which cleans the supplied from the pressure side of an air compressor 100 via a compressed air line compressed air by means of an air dryer cartridge 20 and in particular freed from moisture, oil and dirt.
- the compressed air preparation system further comprises a pressure regulator 40, which is constructed here by way of example as a 2/2-way valve and the supplied from the pressure side of the air compressor 100 compressed air by air delivery via a
- Silencer 50 regulates the environment to a target pressure, which is also in the
- Control device electronically controlled solenoid valve 60 is provided, which is, for example, constructed as a 3/2-way valve and designed to control the operation of the pressure regulator 40. Depending on the position of the solenoid valve 60, the pressure regulator 40 is controlled in a pressure-releasing vent position or a pressure-retaining blocking position.
- a corresponding to the pressure curve or the pressure drop during the venting process information is now detected, for example.
- a sensor or from a memory eg. Based on a stored map, a Memory table or the like.
- This determines therefrom the current pressure value and controls the solenoid valve 60 for temporarily switching off the venting process as soon as a predetermined pressure value has been reached. As a result, a further increase in the sound pressure is avoided.
- the venting process is then carried out again
- Sound pressure level or initial pressure level or desired venting period the shutdown and resumption of the venting process can be repeated as often. It may, for example, also predetermined parameters for desired
- Pre-set bleed times and frequencies that allow a timed control of the gradual venting without further measurement of pressure values.
- Venting present initial pressure set at which the
- Venting is terminated for a predetermined period of time.
- This value and the predetermined interruption time duration can, for example, be used for various purposes
- System parameters such as system pressure, max. Sound pressure, ventilation time, etc. be stored in a accessible from the controller table memory or map.
- Temperature sensor a time sensor (timer), a sound pressure sensor or a
- Air pressure sensor serve. Since all corresponding measured values are at least correlated with the air pressure applied to the muffler 50, the control device can use this measurement information to ascertain the current pressure during the venting process and the solenoid valve 60 can be switched on and off in accordance with FIG.
- the proposed silent low-step ventilation process can also be carried out on the basis of stored parameter values as default values without pressure measurement.
- the control device can, for example, determine a switch-on time of a time-modulated signal on the basis of the measurement information or the stored default information and control the solenoid valve 60 with this signal so that a predetermined number of partial venting operations are carried out with predetermined switch-on and switch-off times. Depending on the respective switch-on time is thus at each
- the controller can turn on the solenoid valve 60 permanently until the overpressure has substantially reduced.
- the control of the venting process may be based on functionality or logic that controls the number of venting bursts, for example, depending on predetermined specification limits and / or using a map such as a sound pressure vent duration map. Furthermore, the type and frequency required for the stepwise venting process
- FIG. 2 shows two timing diagrams with exemplary system pressure waveform 1 and
- Compressor supply pressure curve 2 (upper diagram) and sound pressure curve 14, switching signal waveform 15 of the solenoid valve 60 and maximum sound pressure curve 16 without inventive clocking (lower diagram).
- the switching waveform 15 shows the timing of the on and off operations of the solenoid valve 60, wherein the solenoid valve 60 for the duration of the pulses
- the time periods marked on the horizontal time axis correspond to an initial production phase 3 for system pressure build-up followed by a
- the dotted line shows the curve 16 of the maximum sound pressure at conventional non-clocked shutdown.
- FIG. 3 shows a flow chart of a bleed control method according to a second embodiment, which may be implemented in the controller as computer control software, for example.
- the program start is initiated, for example, after reaching a cut-off pressure.
- the solenoid valve 60 is turned on.
- a first predetermined value is determined from a memory map or an algorithm
- Pressure difference to limit the sound pressure level determined and in step 303 on the basis of the measurement information obtained by a sensor e.g., time interval,
- step 303 Memory information determined whether the desired pressure difference has been reached or not. If not, step 303 is repeated until the determined
- step 305 it is checked in step 305 whether a predetermined lower pressure limit is reached. If not, the flow returns to step 301 and the solenoid valve 60 is turned on again and the second partial vent is initiated. Once it is determined in step 305 that the lower pressure limit has been reached, the stepwise venting control process ends.
- Venting period includes the last partial venting called "permanent", which also has a finite duration of time.
- the number of venting blows (partial vents) of the proposed stepwise venting operation is determined by the requirements of the desired maximum
- venting bumps can be the same length or variable. Prolonged vent shocks may be advantageous due to the falling sound pressure.
- Venting process is controlled after a predetermined period of time.
- the switching off and restarting of the venting process can take place several times upon reaching successive, preferably smaller, predetermined pressure values of the venting pressure until reaching a
- the control device for the compressed air preparation can by a
- program-controlled computer device in which the steps of FIG. 3 and also the processing of the control data into control commands or control signals for the solenoid valve or any other valve device by means of a
- Computer program for example, stored on a computer-readable storage medium or via a network such as the Internet or a local network is downloadable.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015111516.6A DE102015111516A1 (de) | 2015-07-16 | 2015-07-16 | Verfahren und Vorrichtung zur Steuerung einer geräuscharmen Druckluftaufbereitung |
| PCT/EP2016/066856 WO2017009444A1 (de) | 2015-07-16 | 2016-07-15 | Verfahren und vorrichtung zur steuerung einer geräuscharmen druckluftaufbereitung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3322624A1 true EP3322624A1 (de) | 2018-05-23 |
| EP3322624B1 EP3322624B1 (de) | 2019-09-11 |
Family
ID=56497749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16741285.7A Active EP3322624B1 (de) | 2015-07-16 | 2016-07-15 | Verfahren und vorrichtung zur steuerung einer geräuscharmen druckluftaufbereitung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3322624B1 (de) |
| CN (1) | CN107848521B (de) |
| DE (1) | DE102015111516A1 (de) |
| WO (1) | WO2017009444A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112455407B (zh) * | 2020-12-09 | 2022-05-03 | 成都威奥畅通科技有限公司 | 一种抑制列尾主机排风回波的方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3504884A1 (de) * | 1985-01-16 | 1986-07-17 | Robert Bosch Gmbh, 7000 Stuttgart | Druckluftaufbereitungsvorrichtung |
| DE102007005223A1 (de) * | 2006-02-10 | 2007-09-13 | Continental Teves Ag & Co. Ohg | Motor-Pumpenaggregat |
| DE102006023681B4 (de) * | 2006-05-19 | 2009-07-02 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Verfahren zum Steuern beziehungsweise Regeln des Luftdrucks in einer Druckluftversorgungseinrichtung |
| DE102008045713B4 (de) | 2008-09-04 | 2012-10-31 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Drucklufteinrichtung eines Fahrzeugs mit geschlossenem Druckluftkreislauf |
| DE102011082749A1 (de) * | 2010-09-15 | 2012-03-15 | Continental Teves Ag & Co. Ohg | Bremsbetätigungseinheit für eine Kraftfahrzeugbremsanlage und Motor-Pumpenaggregat zur Bereitstellung von Unterdruck für eine Bremsbetätigungseinheit einer Kraftfahrzeugbremsanlage |
| EP2492118B1 (de) * | 2011-02-25 | 2017-12-13 | WABCO GmbH | Verfahren zum Betreiben einer Druckluftaufbereitungsanlage in einem Fahrzeug, Druckluftaufbereitungsanlage mit einem solchen Verfahren, Fahrzeug mit einer solchen Druckluftaufbereitungsanlage und Computerprogrammprodukt |
-
2015
- 2015-07-16 DE DE102015111516.6A patent/DE102015111516A1/de not_active Withdrawn
-
2016
- 2016-07-15 WO PCT/EP2016/066856 patent/WO2017009444A1/de not_active Ceased
- 2016-07-15 CN CN201680041985.XA patent/CN107848521B/zh active Active
- 2016-07-15 EP EP16741285.7A patent/EP3322624B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| BR112018000654A2 (pt) | 2018-09-18 |
| CN107848521A (zh) | 2018-03-27 |
| CN107848521B (zh) | 2020-11-24 |
| DE102015111516A1 (de) | 2017-01-19 |
| EP3322624B1 (de) | 2019-09-11 |
| WO2017009444A1 (de) | 2017-01-19 |
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